/Engine/Plugins/FX/Niagara/Source/NiagaraEditor/Public/NiagaraEditorUtilities.h
Gets a list of the registered payload types which are allowed in the current editor context. This API should be called when providing a list types to the user instead of getting the type list directly from the type registry.
namespace FNiagaraEditorUtilities { void FNiagaraEditorUtilities::GetAllowedPayloadTypes ( [TArray](API\Runtime\Core\Containers\TArray)< [FNiagaraTypeDefinition](API\Plugins\Niagara\FNiagaraTypeDefinition) > & OutAllowedTypes ) }